• 45,945 lbs Operating Weight
  • 205 @1950 rpm Horsepower
  • 5.78 yd³ Blade Capacity


The wide track D65WX-17 has all the same great features as the D65 E and P machines but uses the standard length track of the EX with the wider track of the LGP PX. The D65WX gives the extra stability some applications such as slope work require without having to go to a low ground pressure shoe. The D65WX-17 can be equipped with the inside mount power angle tilt blade or the outside mount Sigma.

D65EX-17 Walkaround  >


Advanced Electronic Control System

The engine control system has been upgraded to effectively manage a variety of parameters such as the air flow rate, EGR gas flow rate, fuel injection parameters, and after treatment functions. The new control system also provides enhanced diagnostic capabilities.

Automatic shift mode

Select for all general dozing. When a load is applied, the transmission automatically shifts down, and when the load is off, it automatically shifts up to a set maximum gear speed. This mode economizes both fuel and production further when the torque converter lockup mechanism is actuated according to load, providing a one-to-one drive.

Automatic Transmission with Lockup Torque Converter

A significant reduction in fuel consumption and greater power train efficiency are achieved by the new automatic transmission and lockup torque converter. The automatic transmission selects the optimal gear range depending on the working conditions and load placed on the machine. This means the machine is always operating at maximum efficiency. The lockup mechanism of the torque converter is automatically actuated to transfer engine power directly to the transmission in travelling and usual dozing speed ranges. Locking up the torque converter results in 10% improved drive train efficiency. Because the electronically controlled Tier 4 Interim engine is extremely efficient, an additional 5% decrease in fuel consumption is realized while also maintaining machine power.

ECO Guidance

In order to support to optimum operation, the following 5 recommendations are displayed to improve fuel saving operation:

    1) Avoid Excessive Engine Idling

    2) Use Economy Mode to Save Fuel

    3) Avoid Hydraulic Relief Pressure

    4) Avoid Overload

    5) Use Automatic Shift Mode


The operator can access the ECO guidance menu to check the Operation Records, Eco Guidance Records, and Average Fuel Consumption logs.

Hydrostatic Steering System (HSS)—Smooth, Powerful Turning

The engine power is transmitted to both tracks without power interruption on the inside track for smooth, powerful turns. Counter-rotation is available in neutral for minimum turning radius, enhancing maneuverability.

KDPF Regeneration Notification

The LCD color monitor panel provides the operator with the status of the KDPF regeneration without interfering with daily operation. When the machine initiates active regeneration, an icon will notify the operator.

Manual shift mode

Select for dozing and ripping rough ground. When loaded, the transmission automatically shifts down, but does not shift up when the load is off.

New Air Suspension Seat

A new higher capacity low-back heated seat with headrest and 15° swivel is now standard.

Newly Integrated ROPS Cab

A newly designed cab; wider, deeper and taller, is integrated with the ROPS. High rigidity and superb sealing performance greatly reduce noise and vibration for the operator and minimize dust entering the cab. The standard air-ride seat positions the operator 3" higher and 4" closer to the blade. The taller and narrower battery box and tanks plus larger glass area also improve visibility of the blade, sides, and rear of the machine. Cab meets OSHA/MSHA ROPS and FOPS Level 2 standards.

Palm Command Control System PCCS Travel Joystick

Palm command travel joystick provides the operator with a relaxed posture and superb fine control. Transmission shifting is simplified with thumb push buttons.

Palm Command Proportional Pressure Control PPC Blade Control Joystick

Blade control joystick uses the PPC valve and joystick, similar to the travel control joystick. PPC control combined with the highly reliable Komatsu hydraulic system enables superb fine control. A switch is now used to angle the PAT blade.

Power Angle Tilt (PAT) Dozer

A Power Angle Tilt dozer blade with highly durable box-structure frame is available for the EX, WX and PX machines. The hydraulic blade tilt and angling functions and manually adjustable blade pitch expand versatility and productivity in a variety of applications. This PAT dozer assembly is tested to the same stringent test standards as Komatsu’s outside mounted blades.

Rear View Monitoring System

On the large LCD color monitor, the operator can view, through one camera, areas directly behind the

machine. This camera can be synchronized with reverse operation.

Selectable Working Mode

Working mode E is for general dozing applications with adequate speed and power while reducing fuel consumption and CO2. Working mode P is aimed at powerful operation and maximum production. The working mode is easily switched on the monitor panel, depending on the work at hand.


E mode (Economy mode)

With E mode, the engine outputs enough power for most general dozing applications without delivering

unnecessary power. This mode allows for energy saving operation and is suitable for work on ground where the machine may experience shoe slip or applications not requiring large power such as downhill dozing, leveling and light-load work.


P mode (Power mode)

With P mode, the engine outputs its full power, allowing the machine to perform large production, heavy-load, or uphill work.

SIGMADOZER – The Next Generation Blade

Based on a completely new digging theory, SIGMADOZER dramatically improves dozing performance and increases productivity. A new frontal design concept adopted for digging and rolling material up at the center of the blade increases soil holding capacity while simultaneously reducing side spillage. It also reduces digging resistance, producing a smoother flow of earth, enabling the dozing of larger quantities of soil with less power.



Model Komatsu SAA6D114E-5*
Type 4-cycle, water-cooled, direct injection
Aspiration Komatsu variable geometry turbocharged, air-to-air aftercooled
No. of cylinders 6
Bore x stroke 4.49" x 5.69" 114 mm x 144.5 mm
Piston displacement 540 in³ 8.85 ltr
Governor All-speed and mid-range, electronic
SAE J1995 - Gross 207 HP 155 kW
ISO 9249 / SAE J1349 - Net 205 HP 153 kW
Hydraulic fan at maximum speed 186 HP 139 kW
Rated rpm 1950 rpm
Fan drive type Hydraulic
Lubrication system:
Method Gear pump, force lubrication
Filter Full-flow
*EPA Tier 4 Interim and EU stage 3B emissions certified

Final Drive

Double-reduction final drive of spur and planetary gear sets to increase tractive effort and reduce gear tooth stresses for long final drive life. Segmented sprocket teeth are bolt-on for easy replacement.

Hydraulic System

Closed-center load sensing system (CLSS) designed for precise and responsive control, and for efficient simultaneous operation.

Hydraulic control units:
All spool valves externally mounted beside the hydraulic tank. Piston type hydraulic pump with capacity (discharge flow) of 248 ltr/min / 65.5 U.S. gal/min at rated engine rpm.

Relief valve setting 4,050 psi 27.9 MPa / 285 kg/cm²
Control valves:
Spool control valves for SIGMADOZER or straight tilt dozer
Blade lift Raise, hold, lower, and float
Blade tilt Right, hold, and left
Rear attachment Raise, hold, and lower
Spool control valves for Power Angle Tilt dozer
Blade lift Raise, hold, lower, and float
Blade tilt Right, hold, and left
Blade angle Right, hold, and left
Rear attachment Raise, hold, and lower
Hydraulic cylinders Double-acting, piston
Number of cylinders - SIGMADOZER Straight Tilt Dozer: Bore:
Blade lift - 2 3.3" 85 mm
Blade tilt - 1 4.9" 125 mm
Blade angle - 2 N/A
Ripper lift - 1 4.9" 125 mm
Pitch angle - 1 39° - 53°
Number of cylinders - Power Tilt Dozer: Bore:
Blade lift - 2 3.5" 90 mm
Blade tilt - 1 5.1" 130 mm
Blade angle - 2 4.3" 110 mm
Ripper lift - 1 4.9" 125 mm
Pitch angle - 1 52° - 58°
Hydraulic oil capacity (refill): 14.5 U.S. gal 55 ltr
Ripper equipment (additional volume):
Multi-shank ripper 1.8 U.S. gal 7 ltr

Service Refill Capacities

Fuel tank 109.6 U.S. gal 415 ltr
Coolant 14.3 U.S. gal 54 ltr
Engine 6.6 U.S. gal 25 ltr
Torque converter, transmission, bevel gear, and steering system 12.7 U.S. gal 48 ltr
Final drive (each side):
D65EX-17 4.4 U.S. gal 16.5 ltr
D65EX-17 with PAT 4.4 U.S. gal 16.5 ltr
D65PX-17 5.8 U.S. gal 22 ltr
D65WX-17 5.8 U.S. gal 22 ltr

Steering System

Palm Command Control System (PCCS) lever controls for all directional movements. Pushing the PCCS lever forward results in forward machine travel, while pulling it rearward reverses the machine. Simply tilt the PCCS lever to left to make a left turn. Tilt it to the right for a right turn.
Hydrostatic Steering System (HSS) is powered by steering planetary units and a hydraulic pump and motor. Counter-rotation turns are also available. Wet, multiple-disc, pedal-controlled service brakes are spring-actuated and hydraulically released. Gear shift lock lever also applies parking brake.

Minimum turning radius:
D65EX-17 6'3" 1.9 m
D65EX-17 with PAT 6'7" 2.0 m
D65PX-17 7'3" 2.2 m
D65WX-17 6'11" 2.1 m

TORQFLOW Transmission

Komatsu TORQFLOW transmission consists of a water-cooled, 3-element, 1-stage, 2-phase, torque converter with lockup clutch, and a planetary gear, multiple-disc clutch transmission which is electronically controlled, hydraulically actuated and force-lubricated for optimum heat dissipation. Shift lock lever and neutral safety switch.

Travel speedForwardReverse
1st2.2 mph
3.6 km/h
2.7 mph
4.4 km/h
2nd3.4 mph
5.5 km/h
4.1 mph
6.6 km/h
3rdL4.5 mph
7.2 km/h
5.3 mph
8.6 km/h
3rd7.0 mph
11.2 km/h
8.3 mph
13.4 km/h


SuspensionOscillating equalizer bar and pivot shaft
Track roller frameMonocoque, large section, durable construction
Rollers and idlersLubricated
Track shoesParallel Link Undercarriage System (PLUS) with lubricated rotating bushings for extended system wear life and lower maintenance costs. Track tension is easily adjusted with grease gun.


  • Air cleaner, double element with dust indicator
  • Alternator, 60 ampere/24V
  • Backup alarm
  • Batteries, 200 Ah/2 x 12V
  • Battery disconnect switch
  • Blade lift cylinders
  • Color monitor, LCD
  • Decelerator pedal
  • Engine hood
  • Engine intake centrifugal precleaner
  • Engine, gull-wing side covers
  • Engine shutdown secondary switch
  • Fenders
  • Front pull hook
  • High mount foot rests
  • Horn, warning
  • Hydraulic driven radiator cooling fan with reverse clean mode
  • Hydraulics for rear equipment
  • KOMTRAX® Level 4
  • Komatsu Diesel Particulate Filter (KDPF)
  • Komatsu Variable Geometry Turbocharger (KVGT)
  • Locks, filler caps and covers
  • Muffler with curved exhaust pipe
  • Oil pressure check ports for power train
  • PM service connector
  • Radiator mask, heavy-duty, hinged, perorated
  • Radiator reserve tank
  • Rear cover
  • ROPS cab**
  • Air conditioner
  • Cab accessories
    --12V power supply (2 ports)

    --Cup holder

    --Rearview mirror

    Rear view monitoring (1 camera)
    --AM/FM Radio w/remote AUX plug (3.5 mm)
  • Shovel holder
  • Work lights
    --2 front, hood mounted

    2 front, cab mounted
    --1 rear, left fender mounted

    --2 rear, cab mounted
  • Seat, air suspension, fabric, heated low back, rotates 15° to right, headrest
  • Seat belt, 76 mm / 3", retractable
  • Seat belt indicator
  • Sealed electrical connectors
  • Secondary engine shutoff switch
  • Starting motor, 11.0 kW/24V
  • Steering system: Hydrostatic Steering System (HSS)
  • Torque converter with auto lock-up
  • Track roller guards, center and end sections
  • Track shoe assembly
  • Heavy-Duty lubricated rotary bushing (PLUS) track
  • 560 mm / 22" single grouser shoe (EX with PAT)
  • 610 mm / 24" single grouser shoe (EX with outside mount blade)
  • 760 mm / 30" single grouser shoe (WX with outside mount blade)
  • 915 mm / 36" single grouser shoe (PX with outside mount blade)
  • Transmission with auto/manual shift modes
  • Underguards, heavy duty
  • Hinged belly pan
  • Transmission
  • Water separator
  • Wide core cooling package

* Dozer assembly and rear mounted equipment are not included in base machine standard equipment
** Cab meets OSHA/MSHA ROPS and FOPS Level 2 standards


  • Dozer assembly
  • Drawbar, long type
  • Hitch
  • Rear counterweight 650 kg / 1,430 lb
  • Rear counterweight HD 775 kg / 1,715 lb
  • Straight tilt frame for use with allied blades
  • Topcon® Plug-N-Play bolt-on finishing kit
  • Track roller guard, full length

Multi-shank ripper (for D65EX/WX):

  • Weight
    1770 kg / 3,900 lb
  • Beam length
    2170 mm / 7'1"
  • Maximum lift above ground
    640 mm / 2'1"
  • Maximum digging depth
    590 mm / 1'11"

Allied Manufacturer's Attachments (Shipped Loose):

  • Guarding - Medford
    • Front sweeps (open top) 126 kg / 300 lb
    • Front sweeps (w/ top cover plate) 204 kg / 450 lb
    • Hinged cab side screens 54 kg / 120 lb
    • Hinged cab rear screen 73 kg / 160 lb
    • Tank guards 431 kg / 950 lb
  • Hydraulic winch - Allied H6H 1325 kg / 2,900 lb
  • Mechanical angle blade - Rockland 1100 kg / 2,425 lb